SERVICE MANUALCALIBRATIONSection 5Figure 8. Adjusting Lo-ldle Position1.Lo-Idle Stop Screw3.Control Lever2.Lock NutAdjust Full Load Fuel Setting and Balance Delivery21.This is an operating test to assure that theinjection pump provides the proper quantity offuel at full load setting and at the same timeprovides a balanced fuel delivery betweenpumping elements. Test and adjustment ismade as follows:a.Operate test stand at specified RPM withcontrol lever in full load position (fullyforward) and specified boost pressure, noterack position as shown on dial indicator.b.If not within specifications remove coverfrom rear of aneroid. Remove aneroid fueladjustment plate. Using KDEP 1047loosen inner jam nut then adjust outer nutclockwise to reduce power and fuel orcounterclockwise to increase power andfuel (Figure 9).c.Operate test stand for fuel delivery atspecified RPM and boost pressure for 1000strokes. Read and record flow to each ofthe six graduates.d.If average fuel delivery for all pumpingelements and imbalance between individualpumping elements do not meetspecifications (see CALIBRATIONCHART), adjust affected elements (seebalanced delivery adjustment procedure).Figure 9. Adjusting Full Load Fuel Setting1.KDEP 10472.AneroidBalanced Delivery Adjustment Procedure22.If fuel flow of one or more pumping elements arenot within specified balance limits given onCALIBRATIONCHART, adjust affectedelements as follows:NOTE: Loosen injection line nut prior to adjusting barrelassemblies.a.Loosen barrel flange clamping nuts.b.Adjust barrels by turning clockwise (asviewed from top) to increase delivery,counterclockwise to decrease delivery.IMPORTANTALWAYS USE BACK-UP WRENCH ONDELIVERY VALVE HOLDER WHENTIGHTENING OR LOOSENING FUELINJECTION LINE NUT.c.Check balance at low idle RPM. Adjustthrottle lever to obtain low idle delivery.d.Maximum difference between cylinders is1 cc from average at rated and ± 2 ccfrom average at low idle.CGES-375Printed in United States of AmericaPage 6
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